Q: when i use emergency brake only one side locks up.

asked by on

caliper pins were seized. Removed and cleaned them and greased them and replaced ripped rubber boots. Front brakes work beautiful now. but the back ebrake doesn't work. Only locks up the drivers side. the passenger side wheel does not get locked up. Brakes and rotors are new enough not to be causing the issue. maybe caliper piston seized on one side? or air in the lines on the one side?
My car has an automatic transmission.

Hello. If the parking brake is only working on one side then you more than likely have an issue with the caliper on the non-functioning side. I usually start by checking the function of the caliper. I remove the wheel and make sure that the brakes are fine. If they are then I have someone actuate the parking brake and watch the piston. It should move out when the parking brake is applied. If the cable is working on the back of the caliper and it is not moving the piston then the caliper is bad. If it is moving then it may just need to be adjusted which typically only needs several applications of the parking brake. If the calipers working and it just will not hold then the brake pads are not broken into the rotor correctly. If you want to have your brakes repaired, consider YourMechanic, as a certified mechanic can come to you to [diagnose and repair your parking brake] https://www.yourmechanic.com/services/parking-emergency-brake-does-not-work-inspection

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. when i use emergency brake only one side locks up.

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Installed power steering belt like you tube says to do in & looks in tact but still not working

Hi Margarita. Unfortunately, YouTube.com videos are not always the best instructions for completing mechanical service. There are more than 20 individual steps involved in replacing the power steering belt, that need to be followed in order to ensure the replacement...

Q: My car is too low for shops. I have about 3 inches of ground clearance. How should I get an alignment done?

Aligning a vehicle yourself is easy especially given the ready availability of tools in the aftermarket which any consumer can purchase. I use Ammco optical toe gauges and a digital caster/camber tool vended by InterComp. You have to use these...

Q: Information on replacement parts

Hi, thanks for writing in. There are a vast variety of companies out on the market that make aftermarket brake pads and wheel bearings for nearly every car on the market including your Jeep. Just be sure to identify the...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.